Jinn (Arabic: Ø§ÙØ¬Ùââ, al-jinn), also romanized as djinn or anglicized as genies (with the more broad meaning of spirits), are supernatural creatures in early Arabian and later Islamic mythology and theology. An individual member of the jinn is known as a jinni, djinni, or genie (Ø§ÙØ¬ÙÙ, al-jinnÄ«). They are mentioned frequently in the Quran (the 72nd sura is titled SÅ«rat al-Jinn) and other Islamic texts.
Once you tighten up and lose range of motion in your arms, it reduces stride length, which is difficult to get back without burning a lot of energy. While sprinting, it is important to get a full range of motion with the arms. Remember, speed is a product of stride length and stride frequency. Stride length and frequency are determined, in part, by the motion of the arms. If you are lazy or passive with your arm action, you are limiting your potential for speed.
Sprinting uses the same muscles as running, but requires that they are considerably more limber for short bursts of speed while avoiding injury. Running is powered by the legs, hips and glutes, so training the same muscles with a focus on speed will prepare you for sprinting.While training, avoid raising on the toes or pumping too high with the arms. Allow the primary muscles used for running to provide the power to sprint.he quadriceps are the muscles at the front of the thighs. These muscles raise the leg and propel the runner forward. Muscles throughout your body work in coordinating pairs.